Top Flite D2 Straight 15-Pack 2009 Golf Ball The Top Flite D2 line of golf balls have been reformulated so they play even longer with the same soft feel. The critically acclaimed Dimple in Dimple Aerodynamic pattern reduces drag and improves lift to give these golf balls a potent combination of distance and control for a wide range of swing speeds. The Top Flite D2 Straight Golf Balls feature a low compression core and Slickote coated ionomer cover designed to reduce hooks and slices for longer and straighter shots. Features: Dimple in Dimple Aerodynamics: Unique surface maintains spin longer throughout flight, allowing the ball to hold its line and maintain lift longer without ballooning. It also increases aerodynamic efficiency by reducing drag, maximizing distance for a wide range of swing speeds. Putter Alignment Scope: Side stamp design allows golfers to better align their putts while also helping square the putter face to promote increased accuracy on the greens. Soft, highly resilient core: Optimized reformulation helps create a softer ball compression while still generating even more distance and maintaining soft feel off the clubface. Slickote coated cover: Designed to minimize side spin and help reduce hooks and slices.